As Esteban talked about Switzerland, I will speak about my country (Spain). Sadly, in Spain the PC Engine is not very known. In fact in those years we had only Sega and Nintendo (and previously Atari). In those years Spain was not updated as far as videogames is concerned. Now things have changed a lot and we are updated, but in those days people didn't know the PC Engine, nor the Jaguar, 3d0, Philips CD-I... we only knew Sega and Nintendo
Nowadays, internet has made that many people can know these old systems, and the PC Engine was known in first instance by the fantastic Akumajo Dracula X... but luckily there is people that have began to love the system too.
My personal case is different: my brother had a Sega Saturn, and in the game Saturn Bomberman (in the battle mode) the characters that you can pick were... characters from the PC Engine games!! There were Bonk, Manjimaru, M. Higgins... I began to investigate who were those cool characters and I knew the PC Engine then... so maybe I am the first spaniard who knew that system ;-)
How much people in Spain does know the system now? Well, many people but... how much of them really LOVE/OBEY the system? It's hard to say, but I guess that we are very few. Anyone there? ;-)